Maintenance Instructions
Control Valve Series 35 000
KÄMMER VENTILE GMBH • MANDERSCHEIDTSTRASSE 19 • D - 45141 ESSEN • TEL.: ( 0201) 89 19 – 5 • FAX: ( 0201) 89 19 – 600
REMOVE AND INSTALL ACTUATOR
General Information
We recommend separating the actuator from the
valve during all repair work.
However, many maintenance and adjusting
operations can be carried out in installed condition.
3.1
Remove actuator
For actuators with spring-to-close, go to 3.1.1
For actuators with spring-to-open, go to 3.1.2
3.1.1
Remove cap and nameplate. Tighten zero
adjusting nut until it just touches the surface
of the spring housing. This relieves the plug
from actuator spring pressure .
3.1.2
Using a wrench, secure the actuator stem
against turning and using a second wrench
loosen the locknuts.
IMPORTANT: The actuator stem must not
be rotated, as this will cause damage to
the diaphragm.
3.1.3
Loosen gland and clamp nuts.
3.1.4
Secure plug stem against turning and un-
screw actuator from plug stem by rotating
counter-clockwise.
IMPORTANT: Ensure that the plug assem-
bly is not rotated with the plug seated.
This may cause irreparable damage to the
seating faces.
3.1.5
Remove actuator and remove at the same
time loc nut, travel indicator disc, gland nut
and clamp nut.
3.2
Install actuator
Information:
•
Before the actuator is installed, it must
be calibrated according to section 3 of the
instructions „Pneumatic and Electro-pneu-
matic Actuators“.
•
All worn or damaged parts must be re-
placed. Reusable parts must be clean.
3.2.1
Position actuator with clamp nut, gland nut,
locknuts and travel indicator disc on the valve.
3.2.2
Only for „spring-to-close“ actuators:
Screw actuator onto plug stem by rotating
clockwise, until the yoke plate just touches the
valve housing and the actuator is aligned for-
wards.
IMPORTANT: Ensure that the plug assem-
bly is not rotated with the plug seated. This
may cause irreparable damage to the seat-
ing faces.
Only for „spring-to-open“ actuators:
Lift plug stem and screw into the actuator stem
until the distance between „plug in seat“ and
„plug raised“ approximately corresponds to the
specified stroke.
3.2.3
Tighten clamp nut and gland nut.
3.2.4
Adjust seat tightness by screwing/unscrewing
the plug stem in/out of the actuator stem.
Important: Ensure that the plug assembly
is not rotated with the plug seated. This
may cause irreparable damage to the seat-
ing faces
Open valve, make adjustment, close valve and
check for leaks.
3.2.5
After adjusting, secure the locknuts and the
travel indicator disc lying between them
against actuator stem and align the travel in-
dicator on the yoke rod.
